Rock Identifier

Category

Sedimentary (Alluvial Deposit)

Browse sedimentary (alluvial deposit) specimens identified by the Rock Identifier community.

Learn about Sedimentary (Alluvial Deposit) in the encyclopedia

Turbidite

Sapropel

Rock Gypsum

Magnetite / Hematite (Iron Ore Pebble) (Fe3O4 (Magnetite) / Fe2O3 (Hematite)) — mineral

Magnetite / Hematite (Iron Ore Pebble)

Fe3O4 (Magnetite) / Fe2O3 (Hematite)

Basalt Pebble / Black River Stone (Aphanitic Mafic Igneous Rock (Basalt)) — igneous

Basalt Pebble / Black River Stone

Aphanitic Mafic Igneous Rock (Basalt)

Granite Cobble / Gneiss (River Rock) (Granitic Gneiss / Felsic Igneous Rock) — igneous

Granite Cobble / Gneiss (River Rock)

Granitic Gneiss / Felsic Igneous Rock

Rough Diamond (Diamond (Carbon, C)) — mineral

Rough Diamond

Diamond (Carbon, C)

Rough Diamond (Natural Diamond (Carbon, C)) — mineral

Rough Diamond

Natural Diamond (Carbon, C)

Carnelian Agate (Silicon Dioxide (SiO2)) — mineral

Carnelian Agate

Silicon Dioxide (SiO2)

Diamond (in jewelry setting) (Diamond (C - Pure Carbon)) — mineral

Diamond (in jewelry setting)

Diamond (C - Pure Carbon)

Diamond (Diamond (pure Carbon, C)) — mineral

Diamond

Diamond (pure Carbon, C)

Diamond (Faceted Gemstone) (Native Carbon (C)) — mineral

Diamond (Faceted Gemstone)

Native Carbon (C)

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Rough Diamond (Diamond (pure Carbon, C)) — mineral

Rough Diamond

Diamond (pure Carbon, C)

Diamond (faceted) (Diamond (Pure Carbon, C)) — mineral

Diamond (faceted)

Diamond (Pure Carbon, C)

Diamond (in jewelry setting) (Adamantine Carbon (C)) — mineral

Diamond (in jewelry setting)

Adamantine Carbon (C)

Diamond (Diamond (pure Carbon, C)) — mineral

Diamond

Diamond (pure Carbon, C)

Pink Quartzite Pebble (Meta-quartzite (SiO2 with iron oxide inclusions)) — metamorphic

Pink Quartzite Pebble

Meta-quartzite (SiO2 with iron oxide inclusions)

Quartz Cobble (River Pebble) (Quartz (Silicon Dioxide - SiO2)) — mineral

Quartz Cobble (River Pebble)

Quartz (Silicon Dioxide - SiO2)

Sunstone (Plagioclase Feldspar (Na,Ca)(Al,Si)4O8) — gemstone

Sunstone

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8

Diamond (Cullinan Heritage) (Carbon (C)) — mineral

Diamond (Cullinan Heritage)

Carbon (C)

Diamond (or Diamond Simulant) (Carbon (C) if diamond, various if simulant (e.g., Cubic Zirconia - ZrO2, Moissanite - SiC)) — gemstone

Diamond (or Diamond Simulant)

Carbon (C) if diamond, various if simulant (e.g., Cubic Zirconia - ZrO2, Moissanite - SiC)

Diamond (Diamond (pure Carbon, C)) — mineral

Diamond

Diamond (pure Carbon, C)

Nephrite Jade (Ca2(Mg, Fe)5Si8O22(OH)2) — metamorphic

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

Rough Diamond (Diamond (C)) — mineral

Rough Diamond

Diamond (C)

Quartz (River Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Diamond (Diamond (C)) — mineral

Diamond

Diamond (C)

Smoky Quartz (Silicon Dioxide (SiO2) with aluminum impurities and natural irradiation) — mineral

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities and natural irradiation

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Diamond (in a jewelry setting) (Cubic Carbon (C)) — mineral

Diamond (in a jewelry setting)

Cubic Carbon (C)

Diamond (Princess Cut Faceted Gemstone) (Native Carbon (C)) — mineral

Diamond (Princess Cut Faceted Gemstone)

Native Carbon (C)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Quartzite (Milky Quartz Cobble) (Silicon Dioxide (SiO2)) — Metamorphic

Quartzite (Milky Quartz Cobble)

Silicon Dioxide (SiO2)

Quartz (Yellow / Citrine Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Yellow / Citrine Pebble)

Silicon Dioxide (SiO2)

Pink Sapphire (Corundum) (Aluminum Oxide (Al2O3) with Chromium/Iron impurities) — gemstone

Pink Sapphire (Corundum)

Aluminum Oxide (Al2O3) with Chromium/Iron impurities

Diamond Druzy (Crystalline Diamond) (Carbon (C)) — mineral

Diamond Druzy (Crystalline Diamond)

Carbon (C)

Indian Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Indian Agate

Cryptocrystalline Quartz (SiO2)

Blue Sapphire (Tumbled/Polished) (Corundum (Al2O3)) — mineral

Blue Sapphire (Tumbled/Polished)

Corundum (Al2O3)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Flesh-colored Quartz Mineral (SiO2 (Silicon Dioxide) with Iron Impurities) — mineral

Flesh-colored Quartz Mineral

SiO2 (Silicon Dioxide) with Iron Impurities

Pink Sapphire (Corundum (Al2O3) with Chromium/Iron/Titanium trace impurities) — mineral

Pink Sapphire

Corundum (Al2O3) with Chromium/Iron/Titanium trace impurities

Gravel and River Pebbles (Unconsolidated rock fragments / Detrital sediment) — sedimentary

Gravel and River Pebbles

Unconsolidated rock fragments / Detrital sediment

Gold Nugget (Gold (Au)) — mineral

Gold Nugget

Gold (Au)

Magnetite Sand (Black Sand) (Magnetite (Fe3O4)) — mineral

Magnetite Sand (Black Sand)

Magnetite (Fe3O4)

Ruby (Faceted) (Corundum (Al2O3 with Cr trace elements)) — gemstone

Ruby (Faceted)

Corundum (Al2O3 with Cr trace elements)